Intelligent reflecting surface (IRS) is a promising solution for enabling the control of wireless
environments. Most of existing works consider that an IRS consists of a large number of …

In this paper, we consider the dynamic power control for delay-aware D2D communications.
The stochastic optimization problem is formulated as an infinite horizon average cost Markov …

Inefficient use of radio spectrum is becoming a serious problem as more and more wireless
systems are being developed to operate in crowded spectrum bands. Cognitive radio offers …

This paper investigates the problem of spectrally efficient operation of a multiuser uplink
cognitive radio system in the presence of a single primary link. The secondary system …

Cognitive heterogeneous network (CR-HetNet) has been deemed a promising technique to
improve spectral efficiency and system capacity. Designing effective resource allocation …

In the common model for spectrum sharing, cognitive users can access the spectrum as long
as the target performance in the legitimate primary system is not violated. In this paper, we …

This paper considers a distributed power allocation scheme for sum-rate-maximization
under cognitive Gaussian multiple access channels (GMACs), where primary users and …

Cooperative multicast has been demonstrated to achieve significant performance gain over
the classic source–destination transmission paradigm by exploiting spatial diversity through …

This paper investigates the effective capacity region for a cognitive radio multiple access
channel (CR-MAC) under the interference power constraint to protect the primary user (PU) …

A cognitive radio (CR) tries to intelligently utilise the idle periods of the primary system (PS)
for opportunistic transmission and can improve the overall spectral utilisation. When a signal …